since the text explains how the component parts of the system work, the principles can be applied more widely. The practical approach includes the design and installation of a working heating system. The book is well illustrated and has some thoughtful with fault diagnosis and trouble-shooting tables to help avoid much inconvenience and possibly save a fortune on plumbers. This book gives a detailed explanation of the design and operation of wet central heating systems. These are systems that distribute heat from a central heater throughout a building by moving hot water. Other systems such as dry electric, masonry heaters and steam based are also described. The necessary information to design a system, select appropriate components, install and commission it properly, maintain it, diagnose faults and repair them is included. Details of a wide variety of technologies are given because of the range of systems currently in operation. Included are chapters on the history and development of central heating; health and safety; the different system components; plumbing techniques; the principles of heat; control systems; fault diagnosis; and lime-scale, corrosion and their control. Though some of the concepts are complex explanations are based on the first principles so as to be accessible to any interested reader. The book will be of use to plumbers, DIY enthusiasts, architects, landlords, and householders who choose and use central heating systems.

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